Former Derby forward Chris Porter grabbed the only goal of the game at Christchurch Meadow, the home of Belper Town and Derby County reserves.
Trialist Ryan Higgins played the full 90 minutes, so did Johnny Ertl, Andy Taylor, Ryan Flynn and Chris Porter, all of whom have featured the first team recently.
The only goal of the game came in the 21st minute. Porter turned neatly and fired a left-footed shot into the corner from just inside the area.
The Blades team in full was: Howard, Higgins, Ertl, Taylor, Warren, Chapell (Deakin 76), Murray, Whitehouse (Harriott 45), Flynn, Porter (Ironside 69), Philliskirk.
Unused, Lynch, Hinchliffe.